← Back to Snippets
$5 Intermediate

Sticky Add to Cart Bar

A fixed bottom bar that appears when the main Add to Cart button scrolls out of view. Displays product title, current price (with sale formatting), selected variant, and a prominent Add to Cart button. Fully responsive and theme-aware.

Category: Conversion Compatibility: All OS 2.0 Themes Updated: Feb 2026
Live Preview
Product Name $49.99
↑ This bar sticks to the bottom of the viewport on scroll

Want this installed for you?

I'll add this to your Shopify store, test it, and make sure it's working perfectly. Done within 24 hours.

Install for Me — $29
✓ Snippet included ✓ Installed & tested ✓ Within 24 hours ✓ Any OS 2.0 theme

What You Get

  1. plynthr-sticky-atc.liquid — The complete snippet file ready to paste into your theme
  2. Install guide — Step-by-step instructions with screenshots
  3. Customization reference — All CSS variables and config options documented

Features

  • Automatically detects when the main Add to Cart button leaves the viewport
  • Shows product title, price (with compare-at-price support), and variant selector
  • Syncs with the main product form — variant changes update both
  • Fully responsive — adapts layout for mobile screens
  • Respects theme colors via CSS custom properties
  • Smooth slide-up/slide-down animation
  • Zero external dependencies
  • Accessible — proper ARIA labels and keyboard support

FAQ

Will this conflict with my theme's existing sticky cart?
Most themes don't include a sticky add-to-cart bar. If yours does, disable it in theme settings first. This snippet uses unique class names to avoid CSS conflicts.
Does it work on collection pages?
This snippet is designed for product pages only. It hooks into the product form and variant data, so it only renders where a product form exists.
Can I change the button text?
Yes — there's a customization variable for the button text. Change it to "Buy Now", "Add to Bag", or anything you prefer.
Start for free then pay $1/month for 3 months — Claim offer